Flat profile tape recording head having beveled non-functional portions
AssigneeWestern Digital Technologies, Inc.
InventorsRobert G. Biskeborn, Oscar J. Ruiz, Kenji Kuroki, Michael T. Babin, Sr., Eduardo Torres
Life of this patent
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Abstract
The present disclosure is generally related to a tape head assembly narrower than the width of a tape, wherein the tape head assembly comprises one or more heads, wherein each of the one or more heads comprise a curved surface comprising a first beveled wing, a second beveled wing, and a flat-lapped surface disposed between the first beveled wing and the second beveled wing. The first beveled wing and the second beveled wing each comprise outer corners recessed from a top surface of the flat-lapped surface such that there is no interaction between the outer corners of the beveled wings and the tape.
Claims19
A tape head, comprising:
- a tape head body having a curved surface disposed at a media facing surface (MFS), wherein the curved surface comprises:
- a flat-lapped surface;
- and
- a first beveled wing extending from the flat-lapped surface, wherein the first beveled wing includes a first corner and a second corner, wherein the first corner and the second corner are connected by a first arched edge,
- wherein a curve of the curved surface is equal to (XcroXm+Ycro)Yn, wherein Xcro is a longitudinal crown height, wherein x is a non-dimensional value between −1 to 1, wherein Ycro is transverse crown height, wherein y is a non-dimensional value between 0.5 to 1.5, wherein m is a first curvature power value between 2 and 3, and wherein n is a second curvature value between 1.5 and 3.
A tape head assembly, comprising:
- a first module comprising:
- a first substrate;
- and
- a first curved surface disposed on the first substrate, wherein the first curved surface comprises:
- a first portion disposed in contact with a media facing surface (MFS);
- and
- a second portion recessed from a top surface of the first portion;
- and
- a second module comprising:
- a second substrate;
- and
- a second curved surface disposed on the second substrate, wherein the second curved surface comprises:
- a third portion disposed in contact with the MFS;
- and
- a second portion recessed from a top surface of the third portion, wherein:
- the first curved surface is spaced a first distance away from the second curved surface,
- the first distance is parallel to the MFS, and
- a curve of each of the first curved surface and the second curved surface is equal to (XcroXm+Ycro)Yn, where Xcro is a longitudinal crown height, where x is a non-dimensional value between −1 to 1, where Ycro is transverse crown height, where y is a non-dimensional value between 0.5 to 1.5, where m is a first curvature power value between 2 and 3, and where n is a second curvature value between 1.5 and 3.
A tape head, comprising:
- a tape head body having a curved surface disposed at a media facing surface (MFS), wherein the curved surface comprises:
- a first layer having a first end and a second end each extending from a flat central portion, wherein each of the first end and the second end are arched;
- a second layer, wherein the second layer is identical to the first layer;
- and
- a recording gap disposed between the first layer and the second layer,
- wherein a curve of the curved surface is equal to (XcroXm+Ycro)Yn, where Xcro is a longitudinal crown height, where x is a non-dimensional value between −1 to 1, where Ycro is transverse crown height, where y is a non-dimensional value between 0.5 to 1.5, where m is a first curvature power value between 2 and 3, and where n is a second curvature value between 1.5 and 3.
Dependencies are inferred from the claim text.